{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "547887621",
    "entityType": "User",
    "nonce": "0xf519eaf0e8996f29cd6d8d1961ef33311f019e69d7eeba87cda16e6664fd063e",
    "signature": "0xec405c3b02c8d2b524025dcf4ee995c40b1eb7796f4a52c02849bb23751bfd86395fbf30c36789ad198e4f1567f7a5da364a65258612cc9e1bb2fbfe97c349451c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}