{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ca660615cbaada17898c20f473a023be7ebdcb6cb54251438e56a29cdf6f4a9",
    "signature": "0xf8debd71c1c0d8358efc180d7ee91674a64b83cfacd685da72c26dff6abf8a2444bf8636df9908e9f2320b5bf3ceefe7eef59a3c7f1e22945ad01a7a9a0977b11c",
    "signer": "0xafB494d9b0e3624C0E782759E0C228734942caF3",
    "userId": "582031052"
  }
}