{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50da953541ca3cbf55ee343eb4a119348f235ad7fd38460faba3364f74512ce7",
    "signature": "0x0ccf89c2cc40daced2dd68211f61ea640feacc00f4c860d62c0b2af083a8f47d76357893fc5e3f53b6c98e4febb75a7d4e94366153e19d4027436eccaedfd08c1b",
    "signer": "0xb99f008ffd166649F28b127d6e721f6989896e7e",
    "userId": "868091040"
  }
}