{
  "manageEntity": {
    "action": "Update",
    "entityId": "456763559",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbf5811c5fb4a42bccef7cb27c7125a466c6d10b9acaeff78689fc5c17a0cc014",
    "signature": "0x29e3dea96e570f3b04df39a8438e540ebab44b06f072dbf8dfddb8286c92d32844f98644fa35c73b92b93330875eec4ed67d2beffdd8b525ebc21c7416432dce1b",
    "signer": "0xa7F7C284b67c3964a36eB3eA1C6697428fa1546a",
    "userId": "456763559"
  }
}