{
  "manageEntity": {
    "action": "Save",
    "entityId": "34484668",
    "entityType": "Track",
    "nonce": "0x86feb2fddfc880d8e0cc33afbc38be00aac5793317762074ad7abc09cab28bf9",
    "signature": "0x1aec704237e9a6812bcb4e15aa49872d2d20eb99bf11174915c445883dc687cf5a134d561d9a9946f897d30e2c8eb25d03258455cf67a96c4fef359a668607601b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}