{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775660",
    "entityType": "User",
    "nonce": "0xd9d67b3038f7dd0be21b58175f7ebe595f15f0fe58f6be8e1def40eeb88c431e",
    "signature": "0x70939301a54763bc007edf54ebab64fc1a94c45ec1c50bd0f6ad291e070ef47024c5da67a709e4437df1414446e30ccc5f2875214357b4d56e58b59e171f51811c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}