{
  "manageEntity": {
    "action": "Save",
    "entityId": "2003109505",
    "entityType": "Track",
    "nonce": "0x0d2751c5894af5c0d07ee7dca6e841b0186bc6315ac5d29fb20caa21a7df133d",
    "signature": "0x15dee5dee17f25f32a56fb14ef250190434a212c1e414845d4c0fa8ffd8efc0735103525ed46986de0955e08353e4f74c4b2c5dd6fabb53657ba7d76f9dae2aa1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}