{
  "manageEntity": {
    "action": "Save",
    "entityId": "179838571",
    "entityType": "Track",
    "nonce": "0x5d4de27b57cb5cbb3b51e5f0039903734c7f5c6e98430ac9fa9e1790621df483",
    "signature": "0xecb38ba4a4f88ace27f18c2c6f911df59c3be47f4b365385aa71f326391e9dda58556a9d22e5494ecdd67b2d02fceae65ed66afa74686af15d21fa34a2efb5de1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}