{
  "manageEntity": {
    "action": "Update",
    "entityId": "299339626",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera6a6bfgl5flahrtlzphajyajfxbzi5m47a2mbfzb7yxwdjueistka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":300787445}]}}}",
    "nonce": "0xea4068cac3d4b2f4a11528ccc878e1b62a1288105418302480e5a66dcd97c616",
    "signature": "0x9744c5dcc115fd2fb15029f228a11be570a1afee256570be8e32e26e2979ecbc3f37f512c8887a2cdd78b4ef4cd490dff0192df9a406a3116c3731943f2850ea1b",
    "signer": "0x8B88e5d2b2c544e566c23f8447d80C8AAdb156eb",
    "userId": "299339626"
  }
}