{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0xe6429043f38bd8818e2ec9145e383971961eb294ee75a22b6dfe5978c9240c74",
    "signature": "0x12daa2c81af362d6196a5b30c129055cee6b67bc2a0b17a76ff4d435733bdf68711b8c9bcb85808dab232ffb2bd4fa772a9a65941d8c8e7d7ef91923fac54e7e1c",
    "signer": "0x5D040c7e172B07431383B4bd6Fdd84ed67B8Ba0f",
    "userId": "508547804"
  }
}