{
  "manageEntity": {
    "action": "Save",
    "entityId": "17317147",
    "entityType": "Track",
    "nonce": "0x59b9ee196b28fc1ad1a824dc69e772ddbfe8a5150c781d43dccc8436a2044a2f",
    "signature": "0x7f8260978f98f2192130fd5e03e563954051e38f469179224d722225a26b9b71079a44e912fe000259c853c88347dccee0bd2d16a664957655be8332c0aa980f1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}