{
  "manageEntity": {
    "action": "Save",
    "entityId": "505213",
    "entityType": "Track",
    "nonce": "0x0ded276d1485a2c3bc1e3416c9f832c1c5e5026db982410466b465c2837c5162",
    "signature": "0x29444d3c4b55a039628fd9f1c88049ac219c7fe1a0ea1fb77559de3453a2b5a16f7c9e3834d73d3b8d0dd5647da6d02d766a8562735f5824182d856696dc65081b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}