{
  "manageEntity": {
    "action": "Save",
    "entityId": "1341036082",
    "entityType": "Track",
    "nonce": "0xcf346cf02db47bbda80a132d8eaf1720efec90a24a190bb431edd965fa17010c",
    "signature": "0x21a664ef7461631e9732d9e89f174978f32b95bd493963d5d559ffdc335d620e4e727e8f43987ad813baa1057b38a450c4e5275b70c668a5310027fa56f5843f1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}