{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbb7e0764402cad135fc22c87c3c092dc5cc177ff20f2cccf9a6a0cb652dcc07f",
    "signature": "0x7f90ab5a8fb5712437fdccf86e67cb549eab57ff85186c9d2d96deba940603191a5b877366915280a144895e1dae0ee27af1065af36af847004add1a1e73b9811c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}