{
  "manageEntity": {
    "action": "Save",
    "entityId": "1033903172",
    "entityType": "Track",
    "nonce": "0x47b65f643429f5221a2da01d6876748defc9e6746471e6b4713a1abdb135ea14",
    "signature": "0xed7c633cf2a7e6c4a6fe829dba411af4531daf9f885687aa04b0fc9563a4109f2973d71b09113f8836bab4186d172733a82814ed3910f3155877c61da06d6d431b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}