{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x97a97805ce83e063b39579189e29d942b7492400c50d5229454209c574ef9456",
    "signature": "0x1b6fdd5501f458dbc3c3d30187f7ccff307a1f8e2ecb8026448707e97d7eb8363df65cfaf745e2c8a8b57cf0421441ea4766d84a54200544f4ecfe253301ab341b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}