{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x0d73df7a546b00867acc4119c25f2c206e5d4091f1476140b948389c11ca255e",
    "signature": "0x72c2ba1e044f6dec06d72fa2603914036f704f0a1637b3d9053533c97e4742717105cabc46df7cae5b15bdc8c5960fbab8d6fad14397e3fb966d1dc656eb447a1b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}