{
  "manageEntity": {
    "action": "Update",
    "entityId": "388884075",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfa559d9bc8f6a4da266ac192c74449d4bf28f2869152effe95b1c18d5c724179",
    "signature": "0x6c0e3d64fe2fcf39b6488f1edba12c95d0979bf185b8a656f499d93ac9ad6ede7acc1c8f1837a02b418e4eec76d3cbace357b5a8196fd50c7985111f9a83e2741c",
    "signer": "0x29d0C785abd77c22c6a474D3c1873C6e92877619",
    "userId": "388884075"
  }
}