{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "959011763",
    "entityType": "User",
    "nonce": "0x4316e789f830c36249e70375b1d08df4a5ac01846bfc24f7b6a4e77d6106d94b",
    "signature": "0xcfc77db937e237e86d13021a9dfeab619cc41fdd0b27c0475066e4b0d41c4831639f7c53b804775d7bd7ff8c42365282cf57a5cbf952bb1812115968e5120ca41c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}