{
  "manageEntity": {
    "action": "Update",
    "entityId": "491278861",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x86944fe2c3e47e651c52e2c50ebb4d35da4f447edf3c2430e9fb8f5b1cbf24d6",
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    "signer": "0x8C284DA8F4B0b4f78e38e8D536226332A074c30f",
    "userId": "491278861"
  }
}