{
  "manageEntity": {
    "action": "Update",
    "entityId": "902919203",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x34fa2c2f4912aaccb64fdce7fdbe9866d3d8fdbe8019c42fd8fb17d4f8a5ae05",
    "signature": "0x68b34a739bbca5a8a18525a738c3a729260a3592baa3b2c0c4e6595a7b4b0e9e6f21cabd20dee9fce5cef0caafd539b2b701087eaca43363e7c79b6fd04ed4e11c",
    "signer": "0x0B8Ee9C69e97Fc455bE89f6992ABd35789739011",
    "userId": "902919203"
  }
}