{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "115412",
    "entityType": "User",
    "nonce": "0x340d226204046ff3cadc9f06aa7bc3e50e6e4158c11621d053c33fba020682c5",
    "signature": "0x7ddd69e78a8804b4b74166d630d4429ab4c6fe5d837dea02025df420877fa47375615e6c687aa40d7799dae8e8ecbc1c7485958b0426cad60539a0e9ece294df1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}