{
  "manageEntity": {
    "action": "Update",
    "entityId": "394467209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd70bfa0b11a8affd5fc701581c3537684e8b1098facf4f11483aa7fee1d559f6",
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    "signer": "0x31D150118CfD75C4505465Ab6C75C10388b88C7f",
    "userId": "394467209"
  }
}