{
  "manageEntity": {
    "action": "Save",
    "entityId": "1079403700",
    "entityType": "Track",
    "nonce": "0x817707f6a5a2a05c796a8d9285086da9ffb3c23a6d4249353e41962eb1dcff85",
    "signature": "0x08b7f65100103f5e4b7d82595828bc320901a114026dc5bcdd3753a052ea9cd530282cb1894501d06f2d665b0f23ea3798486b438b5e83756586e57f0dc6f1a21b",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}