{
  "manageEntity": {
    "action": "Update",
    "entityId": "193799807",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe6ebf31b7904e38837399294d01b40ccd83ec47cee31e1d837e39be9975c1e99",
    "signature": "0x2f8a8cd61dd8b75278c19af4746930e1316e76334628c1ab78243249394020bb0e702e7bffa1532b384457c887e794c1968b339c15e1d53e5668b04abdf9923f1b",
    "signer": "0x399726fd5A103a5f9026e1Cfe43Fb38073AE3A3d",
    "userId": "193799807"
  }
}