{
  "manageEntity": {
    "action": "Save",
    "entityId": "1834782930",
    "entityType": "Track",
    "nonce": "0x83b367d2eaa97f99d59977fa77fdd6b03767e48bd8212819f9665c478e0fd916",
    "signature": "0x9a7b90dbbfdd5ee423ead4402d129625c8079933eac8c202c856c097276bdfd54ed95421e4d227e747b72772d0c1348e4b4094a87870e27ae7d2fbfbf7a57e1d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}