{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "711757920",
    "entityType": "User",
    "nonce": "0x34054b11f96cfd52461b1a89b7e2c81e38cae0ecbd58c32fb0b6349bb7a64cde",
    "signature": "0x4c5b352840d20aff6421075124f755e7820a4247d886dae3d51f9eb50b0005b96a665f1216ae36086cc5ae8c1a6ac8d694e2036c384674438b7f316a9748d3231c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}