{
  "manageEntity": {
    "action": "Update",
    "entityId": "989231579",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9b2ede560b8ca279880af82650cac26e1fa5fee649f6c730ae1766fbd9f073ef",
    "signature": "0x4e3d50b4675047e9e8412a417df3082399f21d08c34a088b3f58b8f3108a9adf01a9509b2b485145ac5a4f18560882b498b348e6629281a144a54eb7e3bdd7cc1c",
    "signer": "0x990F2c91Bb2F5E5014BcD365320De09c44E1e1E5",
    "userId": "989231579"
  }
}