{
  "manageEntity": {
    "action": "Save",
    "entityId": "956390165",
    "entityType": "Track",
    "nonce": "0xb4dd796dd51dd20b95ee667c56e1cd8c0f145adcbe0433d65d43fc9b01e2ee2b",
    "signature": "0xd8729e03bed00679b2a29b8cc3e6d538001f9347697bc5944fa2e44623b8aa882f7afa5c758c2511ffcfe4d9752963d2f3447f04731a444f3552ab2a55b071191b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}