{
  "manageEntity": {
    "action": "Save",
    "entityId": "705761",
    "entityType": "Track",
    "nonce": "0x80abbfb410393637e37ea0032cb5acc394f3ab18599e8a03b1c9a665a9e8a23c",
    "signature": "0x83207dcb94827ffe25506f20b86a132ce5052d02666b99c6bead59203b00337e37c8debfe5e45f66718d46a5b818241bfe1018cffd47b53697f8b7c656f3c26e1b",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}