{
  "manageEntity": {
    "action": "Update",
    "entityId": "530967904",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5601a716859773c144a97d4a5a6fdcd177405aee4fb6cca00952f8456c519c68",
    "signature": "0x3283ef2f40b89cc26426ac4a9126ba01b274aff7d9925e9196293f57996221af731d2fb94c02da3c9627abe669cbd6f77becf13a701a77a20d9dd3f2b554d9481b",
    "signer": "0xB8a4a55a854754893d331b37B94185061DA9d5B3",
    "userId": "530967904"
  }
}