{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103316",
    "entityType": "User",
    "nonce": "0x3ba78df4354042269366f9dae8413361bde868c8439aab275283f1fabd9ed7a8",
    "signature": "0x2abe9de075c1b0090952839a1d5dedd6810cfc75f59c2904640121804a626ae06948b4f211baaf79b51713bfcf857e91f52e66b413112ad386263d65e57e4f4d1c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}