{
  "manageEntity": {
    "action": "Update",
    "entityId": "421474060",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x06a012e6186a7400b1e76e05c28701e74e0ba0a5940763ae1bc7eac0661ae319",
    "signature": "0x70906270b709fbbdcf9d663b870e36698ecd23ba3006cbf4303536c18798948207942841be3d67400172e53151ac3607e5440600f68e2b4a0d3d83abb12ed5da1b",
    "signer": "0xB3C37a4A1EF6a2BA2A01345d6051e6C118DAE949",
    "userId": "421474060"
  }
}