{
  "manageEntity": {
    "action": "Save",
    "entityId": "1114071",
    "entityType": "Track",
    "nonce": "0x25ba4c99d167be22ee2371cd62e0690806f8a5cc08623e4c0c64148bdf59384f",
    "signature": "0x8a868ae356ee91c9f66c470cbb7323fd45cf87bed1a04e1968d83b352c76aa0940dafe12438ecddd9e476aa17dabe712b183337c56571703d407047d836d3f1d1c",
    "signer": "0x48c57b64a5a12Dc7C7742Fdb629EEce52FF5591D",
    "userId": "930634116"
  }
}