{
  "manageEntity": {
    "action": "Save",
    "entityId": "825330279",
    "entityType": "Track",
    "nonce": "0xe4294c5ea45d039aec43942b340ba8720b8236018d3665222cc80fc7b01022c2",
    "signature": "0x43bb85d061c85cf5a50120abde7839c5f7090a4085056550fe3dfa07f5898cac41608b79929b684831fc4c3551008d6ae8102b2fed60af697c8affa96fe9a53c1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}