{
  "manageEntity": {
    "action": "Save",
    "entityId": "276680491",
    "entityType": "Track",
    "nonce": "0x34be5e6f9f3edbf445be530b8a99e88eeccd18e284540216619a1226c8af4c2c",
    "signature": "0x06c082ef5d9d2dab2ec097cdc21d5ae39fb8ae95eca0c56fabc46f1149dffd4b6a78365582dd70c5adc9f97fb117eb1a3e77412ce51089ea25f22256cd1d31461b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}