{
  "manageEntity": {
    "action": "Save",
    "entityId": "2109577130",
    "entityType": "Track",
    "nonce": "0xb6901a26b9bb70d3a0f9801a0679bbfd6f466cf5f0913689b44137c9b4444fe3",
    "signature": "0x3681783f21cf6e47ac086a4b34773d86c6a0d0b6c055d8d0ffd42882650e2d9508f5b3f4312935b80bda8da36a169919cc93090d88c85e289174370a27414ea91c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}