{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28768",
    "entityType": "User",
    "nonce": "0xeafa1aa8c0fb8449a6c8fd8fa23c442e3cabe9e61280f1acf032acbfd28608de",
    "signature": "0xc75ae718a7ae00d39f28be96e54521cef351a02812870be2c31ba94547357b741d41dab582976a81e90208bbd3d97a9ea4df9e44d8a2d44ec9c38c03e14e07341c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}