{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026579424",
    "entityType": "Track",
    "nonce": "0xc1fe06be8c4a60c5c3302333bae3e22ca02f4c5ca2d759fefa4b82d6dbb2247d",
    "signature": "0xe08ef5bb73bdead25a2f233d2ff0ea35a2b6e44823af6c2a1bf3b5aaf035251078d7f2845284d2fdc0a0d010304df38fa2754e817cde21897d9b3e3802dfdee71b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}