{
  "manageEntity": {
    "action": "Save",
    "entityId": "1124978",
    "entityType": "Track",
    "nonce": "0xf99bd4f7b19a06629fd42fa6d02c603dca535d78e546ac5f6cd3814d41a2bc93",
    "signature": "0x303625fa71fcbe77d2e90e0179ca41b00f0cd26ae8d6aa95bd84b3b27fdcad7a1225c3320ad9b3f43380e40d9a60c463374eadc5f071c97a2d1ac286896c22ac1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}