{
  "manageEntity": {
    "action": "Save",
    "entityId": "169079",
    "entityType": "Track",
    "nonce": "0x11f3b4bf80c3c19f6d95b126b6f73901e6cabb3d204ce4dfa003e65accc106fc",
    "signature": "0x25fcd579477eb582a53688517b1b7eeca0715bb544c27cfda8c277a0e2dfd9104e765c996ccd911f57d432f670a4648b3cfa6143fa83341d86476589dbad0ff71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}