{
  "manageEntity": {
    "action": "Update",
    "entityId": "850401302",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x541ca50281b2890c74bbebe65a4bc2a28502fdad562f2de966d8494c83dd6b8d",
    "signature": "0xeaf48f9cb1f582f6da8e22e79e604edc655978906625d6f04bfe3ce202ef0f127dd9de182e6aa8c3d17a19a37a7537a559c3c0a59653437962fdde1a94c9b9371c",
    "signer": "0xb94b5945e69EfdBfCFD70c33880719283cC5950a",
    "userId": "850401302"
  }
}