{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x5cb1ec25c8b8c674e3bffd485c2264bea83f70b06ce79c84a5889fe5685510f0",
    "signature": "0xf25bb66effbec84eab961d52eed8a03503f180ecdf4428a801af4c853f4c2d3e3ea89b5e23254cbf916afce4694621b69e35a9487026b07f68685c48f9f124511b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}