{
  "manageEntity": {
    "action": "Update",
    "entityId": "731857092",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7435cf7de850e380c440649959f42486b9e04bfd9d4bc7be745880a0859e4866",
    "signature": "0x7f1567425094d3d857ebe33d68a8fcc584f7840c4384d0f6cb72a8db4820d5217bbe77fa25534ca2964a6898bf603ec59a2ab72c1b54779a116816a8d503ffdb1b",
    "signer": "0xFD38001fBA4A5C9a6b9302C73A7F50f65B306dD1",
    "userId": "731857092"
  }
}