{
  "manageEntity": {
    "action": "Save",
    "entityId": "1148168308",
    "entityType": "Track",
    "nonce": "0xd75efb55b9ae02d79e8adf916de6126feba3848f09b3b2ba7c1346cd8a0b2c54",
    "signature": "0x77130acdd20faa14fe4970853e9fd79d0044e3931cd5e9e0ea480b3bc1e753e3587f20142c8a60e3111f6787c89e624b047a3d9e14fb2967c0c31d98d1836ac91c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}