{
  "manageEntity": {
    "action": "Update",
    "entityId": "447712901",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x479a477ad6b06ea4ec0d3d6b9e944a549749f43e63765fb186653e81cc4079dd",
    "signature": "0x62481085497997ec831c555b5c2d9dd38e0e5f20f3a71848a4520a45b5941550760f7f98fd9782f8e30c7ddee64eb3b45a4b2b5459c3f3b7313e67d3a3b8c67c1b",
    "signer": "0x178947C45799B8c451Db3666784EFe2F127c86Ea",
    "userId": "447712901"
  }
}