{
  "manageEntity": {
    "action": "Update",
    "entityId": "903771005",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x002c49e2ec10e7cd27e906de4e887ea14210663c3c0992e5fb34876e49cdbe58",
    "signature": "0x53027820b56cf45bf171c4e25ceb828633270424bdc0f1b7c676083dbe208ce17efd1f7ab21415a176948a968d9616b8259386e738c0b733697eecb55f4b77d91c",
    "signer": "0x1284F78d62f9A13dC8624E39015d4744C3102d1e",
    "userId": "903771005"
  }
}