{
  "manageEntity": {
    "action": "Update",
    "entityId": "323311816",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfeb13f1c84e255686f2224b519f47b3ff8f0a2b65af9f756b295a4aa88043ade",
    "signature": "0xfd54bd63fd4af6f606f7cd4963474a8fd27c317c1b14338960cbcdf9fbd6fa334a3ea360cae82f84510301052d16896d77611961f8610a37b2fc4f677f2ac2bd1b",
    "signer": "0x3525e5EC1C0dA59B8A906f8265acE9D507Ab3069",
    "userId": "323311816"
  }
}