{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc57d098fc201cd1f5ee54e8013e36a7abff207f4b24395ccdf56cae5381ef909",
    "signature": "0xe66e0809f25440adbb3f8fe98a979e14e551f8466dd39f8210269f9e058bfe0b45b416826a4a811e030ff6fcb52d2bc91f764ac9f468c2c114bb1b5b173a0cea1c",
    "signer": "0x9beE8b4Cf6AeeE49134884acC6BF46726Ef9d81C",
    "userId": "923108086"
  }
}