{
  "manageEntity": {
    "action": "Update",
    "entityId": "756659886",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x52c0efc1c183647a89e02ddf4b06e221af4413c78ef810146dd328d1d6c82bb3",
    "signature": "0xf5dd19149f1794bf2f8bcabb17137d42292623fa2f893196bc018302b4b557de7b94b3deb4d9bb67b8a600b24b6da1e3c9d024c6bc77c2fa6688f820eee76f1a1b",
    "signer": "0x580Aa7c985f7eEbd81267A7D6439f1da105410E8",
    "userId": "756659886"
  }
}