{
  "manageEntity": {
    "action": "Save",
    "entityId": "1108172361",
    "entityType": "Track",
    "nonce": "0x3d3d3518c949e24dccf4f9436272ebc0ab105bd5bbbade4122bd372cab2790d9",
    "signature": "0xfd42b7263231ffff4f681bbde5c32f4a0fdf6545036d58024ad607ba524f413715ecdeaadfcdd9fe051700340613f7638e7521fe2850d55d715c59c9edc3c60c1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}