{
  "manageEntity": {
    "action": "Save",
    "entityId": "562044",
    "entityType": "Track",
    "nonce": "0x863d5c88ddda71d852875093d317059699e0913129f6c11896f824749363356b",
    "signature": "0x3f607065c40abedb101d87d3dda81fe0cac221480ef44010599aa1c4ac9058e22f6721cbb3d0b53ca9b0d7d04666959424001a531a1796f1592a15027a08d9fe1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}