{
  "manageEntity": {
    "action": "Save",
    "entityId": "1366629882",
    "entityType": "Track",
    "nonce": "0x1c13cb6a949903e99a934f2a54311292973381fe1e3f180021b0e97e8a3854bc",
    "signature": "0xc9a17789b692ccf3798f754ae3fc25be91e2ba4ea069912455b517630d8b69952940057cdadb227e07c78e294d067c84c7e9d295f33868e025bf77b0e698d1a21b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}