{
  "manageEntity": {
    "action": "Update",
    "entityId": "456087321",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajopzcud4mctalbfvhelhsl2wxxwj5xzu7kcabjolx2bqcmjqjbuq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1053100257}]}}}",
    "nonce": "0x1cd4ce28f3d1f35cca78e35721b84978c3eba68477d6230f435ef5e25c0a25f9",
    "signature": "0xd9a638a519e9d1624b1c5629e0f4a0d17d5373f68f433a8efb93f5bc48f4c15b115c28db8b2e01d07d5d9ac3befc296053de92d9f43170867093dc6d9b9edc061c",
    "signer": "0x14Cf60a0eab3a24fb7230Cc44B9a9b955d28E2D3",
    "userId": "456087321"
  }
}