{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449938034",
    "entityType": "User",
    "nonce": "0x261cf776869358d6755cdd050422cfcd3bd89da6c571f7c8423ba039fd8a13f2",
    "signature": "0xc064131687356b9404538f9813c7d919252abbda47fd8b79a5bc5986069657cf50ae87444e43614fd3e6c6c0063fecd3d1eb1ed384a4275b915c368a366107121b",
    "signer": "0xD24F8A2501472e4c9FD5dfCCDF80B550912c7FB0",
    "userId": "887242445"
  }
}