{
  "manageEntity": {
    "action": "Save",
    "entityId": "1244288770",
    "entityType": "Track",
    "nonce": "0xfa612c6e23c8fd35c6c1e7039d84b8ddb7ea52dfeb9f26def7a0dae65ae2ef70",
    "signature": "0x8c3496f025667e2839c2489ce29ffb1dec1cfc4085a7b5a36c4a823fff682420309a102197f753ced3998cdc5f1790865b1b7af63cb8934017cd45a303285f411c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}