{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x613898dfe1c2329b3d726f8b5fdcabc7c35a4ae96557daab1adb927e30950f62",
    "signature": "0xa4d418534ebe4377eb56703c7abb28ab0a0e258a22e5d3b4a81c757907f90b6e77725e205bcfe1301c81f58e014c45f7bc6dd191fdeb187d2e49c035e84dac341b",
    "signer": "0x4Ad80B5AE9a919a8794fFB27511cC7171BE68f74",
    "userId": "245565231"
  }
}