{
  "manageEntity": {
    "action": "Save",
    "entityId": "947044",
    "entityType": "Track",
    "nonce": "0x026f78eac337d837ffc0729f53967d923bd676cb195b1bc25664fb982788f3ed",
    "signature": "0x660e8ae1ee61d83cd44fa9c564b8eb85665204101148cb18eb1c9af94b38140d3d078ff429943dc1cb66d6526dc684dad8f1247c26b9e9d8934e416d7f3aa4811b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}