{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "111210",
    "entityType": "User",
    "nonce": "0xbd1607f89a022bf9cb577456747a93dc8c18a4c5cd029339703ddb884ae2855a",
    "signature": "0xb270a1203cd1b25157b153e457e0de1a04233d3f3013e78f3a6fe0867a56fee55cbbf150d01269f677fa30cd247713c9093a73da691d48799588aeeca210b7371c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}