{
  "manageEntity": {
    "action": "Save",
    "entityId": "1133676",
    "entityType": "Track",
    "nonce": "0x0fbbe429f82298c5081330cd2676b6c6e8ad9cb5d19a8cd30bdad0ea3e10cdf0",
    "signature": "0xb46f5d5958c668e39c22c69d1414701d53f8755b5fab3344bd8196ade2c962c52afa626e284129847ea7b90af535400c5bf143f19c86d50f7e94cf49cff9c9801b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}