{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57556",
    "entityType": "User",
    "nonce": "0x07d3f1b6add66f36a59c9c05354c7003281ced6f7a6ffd8e0936e6118d02d181",
    "signature": "0x417833b7e60243dd1c3b1cd91a0653c055ec840ad461884154c00ce7732cc86c7a3ca5a4f2fc43cfcf4ad95409c5cad932aea57d2c170e314b88af27b2eb8c4c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}