{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe471257edb65ef07aecb78457d5c56e952ba3aa130c3e48f9452d7a947051606",
    "signature": "0xfa3f2196fe5477c74cd91ed5b0f1918007a8a7fc71ba30b9540e0876f180abaa7fab3542688dead4b5820e83d2560d86c11beebe799eb05ccdda433b312f83c81c",
    "signer": "0x73Fa2a31B1ddF03cd963c53C67ACFd9Bd27E7d2A",
    "userId": "970203605"
  }
}