{
  "manageEntity": {
    "action": "Update",
    "entityId": "648743045",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragfie2w74ditw3c64b7q35fcgfr7pkaq4e3pqldphbo4wo5bjpida\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1862648089},{\"type\":\"playlist\",\"playlist_id\":535391917},{\"type\":\"playlist\",\"playlist_id\":430864977},{\"type\":\"playlist\",\"playlist_id\":1558585299}]}}}",
    "nonce": "0x5ab44a4d57cf4dadd83f58c1829c4fcb41b89a86edfde90c9b37e7d5f473cecd",
    "signature": "0xb8560e7bdf8286fb350529c07cb730c1f57f531b6902b491b08dcea38cf10cbe37bbfdef1e143fa646513282254a09e97338d8c23d7feea7ec84896c92cde95c1c",
    "signer": "0xCaE1ee7dc4DB493ceab857fd89C09fA305C4c5d4",
    "userId": "648743045"
  }
}