{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0556b5fe515874707e505a37382a78e92aa3a8726e1f6377c7fbc3333747a15b",
    "signature": "0xff3ea4d9bef81fc6efe50bbf6e3f07e02c7f39a9ab1d39ccef326bf74540dcda360d24150b6634e9a5cf4ae92ec9bb04cafecb6148595492b3f05fccf4bcfd1d1c",
    "signer": "0x4420170842AA4cA6Cd620387c037bD95F9E999af",
    "userId": "419199788"
  }
}