{
  "manageEntity": {
    "action": "Update",
    "entityId": "135085700",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierasynkhcb4w6tucvss2ytpkjjpouzmdwx5ghnwesbz7ooo3ywcyucq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1565516143}]}}}",
    "nonce": "0xe8120b21a0749bdbe446e6607396417ce1126adf23b9abb34d642c07a5ed8140",
    "signature": "0x7ab3682b53658a3167eb6e31a391595feea02edf75a1e611a6144662e69f65034b6d902404033565b28203d8b70df9badec5fc19d7f7b1d5bc1eac1a27a129381c",
    "signer": "0x52D9e36016EEaFD98466652F88bE3b7C97D4b408",
    "userId": "135085700"
  }
}