{
  "manageEntity": {
    "action": "Save",
    "entityId": "1932526843",
    "entityType": "Track",
    "nonce": "0x316a888487647a5ea903fd42defb878c85fd9a2732f515750921a78c3fbb7ed8",
    "signature": "0xbb72dc08c17e4b6f286b0177fbf95efadfeae68b8696a4c960fe6754501480c91c17cbbbd2d21d2d59ce5248825aebf5b77bb695d5c3d5af4c87de8abedc4cf01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}