{
  "manageEntity": {
    "action": "Save",
    "entityId": "1097783095",
    "entityType": "Track",
    "nonce": "0x4030055e283663b870f69f8d64da984b249375dd45f8988dde13eefc6c5e5436",
    "signature": "0xe4327c9e19955db5180ab600d3b88fcec11ff7b2fd65d8cb1b19bcbef21faad2594acb781b45d1760bea55d24218bf4e91d3b8ac1680da5629352ea9c27056d61b",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}