{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645526985",
    "entityType": "User",
    "nonce": "0xf3b93924378c9928d7dc31241931a83001529c696e1e3fcb03bcce3470dddeb9",
    "signature": "0x8cfdac0128739676f45ba1887ad1942b2e76f6acd7abb3f6d0c196c9190e9a1a1b94839682a15ccf436b300b185b32da90614a0836edd59aab7e12b29139bc6f1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}