{
  "manageEntity": {
    "action": "Update",
    "entityId": "179777073",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x38ecbddcb6ec60ff1956233c72c10126854440650e560af388847400857ab9f2",
    "signature": "0x8c40919ee7429b038798af6570d01273da11faae2a804c8c529f737632cebba64fddabc94596525b76efa4c81253b706620f7dfe9e482e17369ef0a300da958b1c",
    "signer": "0x303fD6F7668Ad0AD901434B85eF391E249785A2C",
    "userId": "179777073"
  }
}