{
  "manageEntity": {
    "action": "Save",
    "entityId": "1479865669",
    "entityType": "Track",
    "nonce": "0x0942e2cd52af7519682ead503180400b75904e5da6d53c5986c12ca3489e5bb7",
    "signature": "0x0bd14d35cadc389cf5418bcce9ba149626ac9e7a007cb4f334d2397e34e52b8f5b0906afd7a9d9b3f3f7b3d3f76ed96d2e1b51effc77b68e9de1e4310abe6af81b",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}