{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "570373843",
    "entityType": "User",
    "nonce": "0x3b28ec022d776e40e78d458937919d3ca8c851ce6cec9690c57f2813577b95ef",
    "signature": "0xcc4a6cf8ab5d9569927291194d877f26c93f694d7f44e11c8a1ce33ce35d4d6356068ac89595695a44ec4fd272a8c084a7228de0edd9e893f18d3065f73306501c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}