{
  "manageEntity": {
    "action": "Update",
    "entityId": "209207132",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb96c7312cc3c94a3106d850abc531039ab36d00fe364b4b0824aadb0631934bd",
    "signature": "0x8db9c0fab2ed12344b263e7cd444bc7ad6dda56307f4bfc83051a87c59b3a7f1298278cd69a04bb5b70abc93d548bb49b1d88a93fec84185806db4d03f5274bd1c",
    "signer": "0x353eDF8e08Ac9dBD056D7FB76Eba4FEF59652d9B",
    "userId": "209207132"
  }
}