{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54353",
    "entityType": "User",
    "nonce": "0xa75bd0b57cb6d6be7e62bb7bb3fdd895cffefdb85991e04252f43dbcb5ae68b7",
    "signature": "0xff1bd8b4aea74307c4cb1ab7985c6512b94be3a5fcdcfc26b8080b2dc5c13c0402c81139ad3ad1e0edbf45b839d48d40f4f7970b6306c27bd7a2921cc33c53791c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}