{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333553",
    "entityType": "User",
    "nonce": "0x65ee2a828a807de83b5456e08ecc22f87fd63ccd7ec1207d8d06760478161615",
    "signature": "0x81a9f603069dd0fdaa8fee0853f48861592e29a4496bcf6f9d883067c88b0fa9764773dab0f898c569a85a35dd7862eb0a5ebd4fcc011aa90002296eadba8ebe1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}