{
  "manageEntity": {
    "action": "Update",
    "entityId": "127830355",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabkxy7736dgunc2tjsn3ldw7pddyd6zhnl2b5mwqcorinbdnfndlq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":817591176},{\"type\":\"playlist\",\"playlist_id\":1379355229},{\"type\":\"playlist\",\"playlist_id\":214333024}]}}}",
    "nonce": "0x6ec963cc11e17bd8a9f3da5b30a4634160fe91b559c2c457854888596af35aa9",
    "signature": "0xf6091a1e78d3f4df8a95f78589baf731953a52cac1383537af6f8de38236570833b7920292477c7dcb20fe6fed9bcc79c72be209c683fe50c35f7442089aba8f1c",
    "signer": "0x8630F2521F11563729A6358aD0134847e803C0B9",
    "userId": "127830355"
  }
}