{
  "manageEntity": {
    "action": "Save",
    "entityId": "1317280190",
    "entityType": "Track",
    "nonce": "0x27a3331fc39ba6825a439febe3c6fb0744a8ce9fd0e4735a2c4b6a9876c40cc7",
    "signature": "0xa592ac108ea4ae9ce32b179f148ce7110ffc7bfc0ab0ec67547579d416a1aaea7c40312e25d07023888c49b784485f1556ad76424e6dc072eb937a8626cddc6c1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}