{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008471125",
    "entityType": "Track",
    "nonce": "0x8937bd35f04a04f851c54d738fb4af32c4bfcc2f0e155121ea6feb42ad13dfb5",
    "signature": "0x2ebed45e8353985cf3e0f164d63480ea21cc7a47bdfefefc5a33ec1f796ff0457824fe98234b773f1d110a3b1dc72281d54273ed23da7428caf08943796e87921c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}