{
  "manageEntity": {
    "action": "Save",
    "entityId": "794698",
    "entityType": "Track",
    "nonce": "0x52f69640f20bba3859a625a5f4f258d18360d83aa2b8849c37e89d5c56388c9e",
    "signature": "0x32f894ad8efbc347ef0a86431049a8acdf8cf2d5f4703c715bd36a49d6f1947062202e64aacee20a446ac0652b707da974f08bc036794d2561d0eceee0f2e4f61c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}