{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x932f4011b0bec09a12e016a9bc07c451e3439609eb6c48bc42527e67fadce84d",
    "signature": "0xd903dd0d8d4d7bf7766680207b3e2b2f705dd4b8b04b8dcfaec78ea72e6fb36662db33f8ff8b7cd3c11c5b418da919b35caa07a273d371a40e6746b52382fbed1c",
    "signer": "0x31fdBb0E5a7aAAe160b470d8DC722F86D8fDA857",
    "userId": "458302619"
  }
}