{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb650f2109bcf8cc951753483ab666bcc7cade630c736f8b314063493c0109a3a",
    "signature": "0xe9ab846b312c3a5c7fe9a957b573b6e66b3c477cf35d6b65d3ad605c30a22ddf0f7c751ee4a511db1ef9ee4815f3c9f13918704b1778c0fb65ee3394570689671c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}