{
  "manageEntity": {
    "action": "Save",
    "entityId": "112051852",
    "entityType": "Track",
    "nonce": "0xba913c6298654f18f8429435c66d2860b4159f13b25e5e1fece3867761394ffd",
    "signature": "0x126f8493c84a615272286e4a9f560ae005416a3567055a7f203d0ec6288932da7b59eb92166ce3bfd9d6c437f5a67cf2c4df8c4a9fc683ccc3089b0914587d221c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}