{
  "manageEntity": {
    "action": "Save",
    "entityId": "24643",
    "entityType": "Track",
    "nonce": "0x6add5fc3f507520904d4aaee9912e78ee4a02d22af454fb49185ca029c8d7bbe",
    "signature": "0x7b6a5c238d5e5c3b9a2dd4d3938ab9a6a35016e6414ee64935d881eae991912330897c08edafe76b948b39773c5966be547c3959521a836c50bb906f0663b7761c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}