{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57188",
    "entityType": "User",
    "nonce": "0x730cc3a7950045daadab1e6ebd3404ad3db79ece06dbfdc1cf8c5adb03c9958a",
    "signature": "0xcfb69de50400b36d50f78c002b77c5f375b097daa966888aee0b1356a33ff97c3d2f547fa9e2ffeb2f4bda40336758512cad1b07ed19e5445558940d5d330fb61b",
    "signer": "0x2d4E313C5C5BBeCd31f664627b0a91361e5D04D1",
    "userId": "106406"
  }
}