{
  "manageEntity": {
    "action": "Update",
    "entityId": "38719261",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x828a909cb2d58b3cc935d9f7ab800238c6097629689f9f8e803aed740329a91d",
    "signature": "0xfd452644ed9042521ccfc99e2ffc07d949be32fc99472d3172898f9f9f20135c41d41919110ae06f6517c841866652a961d795c3f1a10cc7ce6839d1bd81c1a31b",
    "signer": "0xde221e39C94364dEa112B68BC6488f0Ce662F693",
    "userId": "38719261"
  }
}