{
  "manageEntity": {
    "action": "Save",
    "entityId": "2005437015",
    "entityType": "Track",
    "nonce": "0x806b4ce655fc3665622f1fd91e0148c213e98578049145808fcd3343f7cbb353",
    "signature": "0xdce15db26502bc2d3fec3fe4766e616387b21b694643ec6d6b5e747cc6b95c913a91694a2110f49a4863d424ddb4c09e3f67bc41e0d370505b0ea5d287c6c5ca1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}