{
  "manageEntity": {
    "action": "Update",
    "entityId": "887781517",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7bb2dcd4491171aa8f03d7fe7c2cb415b06e7b9f48b0417eaf100443854b7386",
    "signature": "0x417dcd8ae45e384257c14549680bb4996837f1bb621d89bc212b870f19ce6ba46d7b2f7bf697d62ae48322e67b5324ccf59f660fe23adfa8c1afb0245a99fd8d1b",
    "signer": "0x2480668A2849AD9Eeef1129d84348cd7073D4Ec7",
    "userId": "887781517"
  }
}