{
  "manageEntity": {
    "action": "Update",
    "entityId": "501224594",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9782f27aba2d0af91084e112086b676735fba22bb0786b1545061845ac086261",
    "signature": "0x3c998c506556102fd791415a2a032cc366afaf172eca8411283e96a8c021b7c50a9dee9b7d651abe9419e0b90132f7916c69751e4131624b0ec4a204b27a2f481b",
    "signer": "0x04d2AeF69165e1c1d73288e89Bf7e0Bf14608308",
    "userId": "501224594"
  }
}