{
  "manageEntity": {
    "action": "Update",
    "entityId": "391273209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3938edc1e3445f88c596b58738f50a61174c63e5497d67f2d10d6cff9387af1a",
    "signature": "0x4927c4aa6838fb14c0f2a1171027412d966f95950862a455443a39ac2f8d02bb7a89b8ac8b6389aa50a7a39e460847948581aae35bbe88a42ddffafd896256d21c",
    "signer": "0x5efc36FC08151fef047922889Bea95522C17ba51",
    "userId": "391273209"
  }
}