{
  "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": "0x0933c37f2bc2a360dfeb152ca130b7be81c270734df71af74eff2c22f9964d33",
    "signature": "0x7e0aa492a2b8dbe475888a33cc8a1d7344e930bc70f9ab3586aa3bae272d0c6c5840639eadad33842a5c316a66ce02679746c18371cc3a7ad9b574bf910a58041c",
    "signer": "0x14Cf60a0eab3a24fb7230Cc44B9a9b955d28E2D3",
    "userId": "456087321"
  }
}