{
  "manageEntity": {
    "action": "Save",
    "entityId": "60819",
    "entityType": "Track",
    "nonce": "0x30332d6ecd5ed89b38d8aa36ab0f0adc38fbafc8d921a685f4432e917485f09a",
    "signature": "0xc6a05fe95d2b86119913f1f83de5be00b3291b5047191af70dfd4dda94aa213968db9255bc5b67c347741c1698e23020e702b903376034e54f01cf527651afe01b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}