curl --request GET \
  --url https://api.neynar.com/v2/farcaster/user/by_username/ \
  --header 'x-api-key: <api-key>'

{
  "user": {
    "object": "user",
    "fid": 3,
    "username": "<string>",
    "custody_address": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
    "registered_at": "2023-11-07T05:31:56Z",
    "profile": {
      "bio": {
        "text": "<string>",
        "mentioned_profiles": [
          {
            "object": "user_dehydrated",
            "fid": 3,
            "username": "<string>",
            "display_name": "<string>",
            "pfp_url": "<string>",
            "custody_address": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
            "score": 123
          }
        ],
        "mentioned_profiles_ranges": [
          {
            "start": 1,
            "end": 1
          }
        ],
        "mentioned_channels": [
          {
            "id": "<string>",
            "name": "<string>",
            "object": "channel_dehydrated",
            "image_url": "<string>"
          }
        ],
        "mentioned_channels_ranges": [
          {
            "start": 1,
            "end": 1
          }
        ]
      },
      "banner": {
        "url": "<string>"
      }
    },
    "follower_count": 123,
    "following_count": 123,
    "verifications": [
      "0x5a927ac639636e534b678e81768ca19e2c6280b7"
    ],
    "auth_addresses": [
      {
        "address": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
        "app": {
          "object": "user_dehydrated",
          "fid": 3,
          "username": "<string>",
          "display_name": "<string>",
          "pfp_url": "<string>",
          "custody_address": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
          "score": 123
        }
      }
    ],
    "verified_addresses": {
      "eth_addresses": [
        "0x5a927ac639636e534b678e81768ca19e2c6280b7"
      ],
      "sol_addresses": [
        "<string>"
      ],
      "primary": {
        "eth_address": "0x5a927ac639636e534b678e81768ca19e2c6280b7",
        "sol_address": "<string>"
      }
    },
    "verified_accounts": [
      {
        "platform": "x",
        "username": "<string>"
      }
    ],
    "display_name": "<string>",
    "pfp_url": "<string>",
    "score": 123
  }
}