{
  "manageEntity": {
    "action": "Save",
    "entityId": "613945452",
    "entityType": "Track",
    "nonce": "0xaec636f727efb72374bb55ec667b5c314a72cd30682d09c2df0e9607d2006fc8",
    "signature": "0x8425dced8d82665077d9503cf7d1e495f04e0f2e4388c9ce51cfe7aa9d87bf607df5aee3085a6a82cd8b0839d2ce510438d25aba0b7fc5abd05f7de23b1923071c",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}