{
  "manageEntity": {
    "action": "Save",
    "entityId": "1755131005",
    "entityType": "Track",
    "nonce": "0x76cde82c8602aad19d625c02e9e080f0f9b15c307dd6ffe50efa44d60eeed7ef",
    "signature": "0x45e4058af00abb8c29bf1e5c6dd21199980fc3e0e5e84a0e135d370e8bc79feb49338d4ec4bdb6681c0f77f10ce54113240dc20b8beafe77f8fff9657490ddc41b",
    "signer": "0x1D3154487c6d305D65C00E8659C465F3a68fc85C",
    "userId": "673590053"
  }
}