{
  "manageEntity": {
    "action": "Update",
    "entityId": "876476535",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb8bada9c5086c96a3635d1935bf8873d7e6b5eeb2dc224962b9d3587e9a9f741",
    "signature": "0xbcf3ccff4b4223fc93b1a4c243518aeaaffacb21c4ca1dde7d4824f2c910fd5d72e7b6807ffafe699e0fab8cc47157f3070f342a778c936ec89f8e0b3083dc3a1c",
    "signer": "0xd23f8E07570E61600393d209664bE2Fa4236E17D",
    "userId": "876476535"
  }
}