{
  "manageEntity": {
    "action": "Update",
    "entityId": "293137833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x91783b2a37db4f999ad643a0da4727a11d8e8f55c4e3513dd0f1cc7e1549db09",
    "signature": "0x7115146fda84f8091ea51f50e6b0288336cfa666ddf6cb20868852146b45817c2d4f3f0247057e34ba4aced83daca41fbfccd289f68f738d2b8e28dc4c11aa801c",
    "signer": "0x9139bE80Cf6D934A072B63279dcE183f715CA770",
    "userId": "293137833"
  }
}