{
  "manageEntity": {
    "action": "Update",
    "entityId": "399675354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x61bcdaa11e7c1fb96115e5cf17b6b2ef314df0a03dc8278943edf3fd08331c96",
    "signature": "0x9908fa574da0db43379db3eb5797e3b57a9cc31c5161edbe24e62dd18da84d23614afdcac3d299c153510df93dc689261b45a1e4c01cc3c4e07467f92d6dc0261c",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}