{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "974232226",
    "entityType": "User",
    "nonce": "0x9220423d0e9d3d81f8fae7b52b0008d9f5f595670fc5ff8e65484293f4219779",
    "signature": "0x5ee87582226c8f339fe84ad70e96e9b3adfb8282988faccbbd1fdefa8d73f4cf3e4bea7eec805396f4b9b1174636482027db0eb6d17a92852ce1caaf0ea576d71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}