{
  "manageEntity": {
    "action": "Save",
    "entityId": "36820598",
    "entityType": "Track",
    "nonce": "0x2f67961ca03bc54989c5aeacb478f2767328e39e1f8557bd339e4903b4ce3b20",
    "signature": "0x19d3644fa47fd5b1a380bca6e7eae03de032729768849004121ff5bfe315d5d7789b1a54e4e760efeb2cdd60443c1067e1bb662b7607c01db077059303f71fe81b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}