{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307299",
    "entityType": "User",
    "nonce": "0xc122d053be6a9c79ea2c39d76c95e84173ea5f73cb7819a89c463b00e61fdeef",
    "signature": "0xda64aca44dc9cc6cb8e7c048553e4dea8944029b6e9078a8b64d09d00bafc1284c84722d282240282db3f0504ec2658c3a380573f68e262ba198d9bdabd058531b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}