{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1683",
    "entityType": "User",
    "nonce": "0x76b472366b921911d373065adb45c130e658d8f391b6a13eabe33677854e5cbb",
    "signature": "0x4661b3eb2b3d8d19282bbda691410a61fd508e82913943a33bbde65004f0bc4929570541e29919a4d27dc7c42141e561de0b4a4c8e02b5e9a19209ce726e8e151b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}