{
  "manageEntity": {
    "action": "Save",
    "entityId": "1877736168",
    "entityType": "Track",
    "nonce": "0x75c9e1163e5bc0e849aebcfd6f925667ed2882305cb0e0eb828f3151a5300216",
    "signature": "0x94ed4d924b9921fe4a3705c4d5c43f82539747555bb0b9540d8c4282ac2cfd5e120e03e9d9742487e835cc3b836bce88dfb26327b8e68b0f2b682fe394bc02531b",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}