{
  "manageEntity": {
    "action": "Update",
    "entityId": "775617597",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x14199a875a4803a7533c7aca6f142d02546dd7b858a30ebea29697928dfda661",
    "signature": "0xe287f48f8174258196e46353605bbb42e8775bf1105db02feb6f700669ecd21129293afeb40e5b23cd8fe8f72d1bdb426969c4278ea314949a9647622158b3781b",
    "signer": "0x3B0368217d442c4EB20f8A2FD118c0D1222D22be",
    "userId": "775617597"
  }
}