{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2043650",
    "entityType": "User",
    "nonce": "0xe323f1372dfa0ab87a1c8939d6113249a9a72414909d61a65fc14b74a12e84a6",
    "signature": "0xae4e9aadfc774cc40cb9a95257f700e0eff0750d05fd4ccc45714d0752a25b5316df54e71fe4e07819db505cae95838f32b2f064ddcf77753842fcd40c8d50b81c",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}