{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x543361641c11fe9afa6aeb3ec57fd2ae9a90d30d227cdfbda86948fc8f2574c9",
    "signature": "0xd2e0b40a7f21801f24f2f4654ab98fdbf27fd8f4a04964aae8cd7728703bb3cd35f7c83d19f7309094afe2552125b8d05314b2d96a0f94ec962278543e8b0f281c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}