{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x76cb0a1208aa3e70f6bf870fea4b2a404d9b11bc295a6f553a304b3aaca3624a",
    "signature": "0x5b4809ede699281222e6c7c4844080ab8eaf1e99803badae3efa693b56d431476d5096d81a76b44f744ab5a9a584f3da5205398ffc85d9f623147ecd4b6f70171c",
    "signer": "0xbC20c5E6faD1eA77f91e409908dd94c7e3f51E4a",
    "userId": "643719689"
  }
}