{
  "manageEntity": {
    "action": "Update",
    "entityId": "336558386",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x87d889c072e16747f1e7b8a6960218e0759e35de1e2a5549234b3e823a612add",
    "signature": "0xb9a98e1bb0ffca023011872d1946c2a4c5acb23bafa8e026cccda7a1c45ff5d90f07b503d4407c2847e7bc174858d3ed09bc0c4198bdef31a534452353c1e7381b",
    "signer": "0xBe18AC3d342FECf3B94A0d895aC912A6617c5209",
    "userId": "336558386"
  }
}