{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081044148",
    "entityType": "Track",
    "nonce": "0x82e09901a0f83a6591be3e4f6490a4e57efac85435130e7571cba253c246d977",
    "signature": "0x4c9708c529273c0f329912a41d97a0888d838847d3719ddfc49318c33ffe67e11bf87a5934c3527d11d3aafef664132cb470c688b9f5b8e9ef82a069bfe6c14c1b",
    "signer": "0x58EeE406DB0683Db4101A97aee427Da7951e499d",
    "userId": "147070911"
  }
}