{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699323433",
    "entityType": "User",
    "nonce": "0x79cae9a3b941da558d81da3cabe17e243c3e412430e7df8198f27ee0de3b21c5",
    "signature": "0xe7cab8857b589bec6b2b6fd1eeefef80e8da8ecbae0d01a0258b1acb508fdc6960b35e83dc97aaae620666a7dd35a61f5610fa0c804e0b901a5b189dd558a81c1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}